Jump to navigation Jump to search This article is about the wireless technology. For the medieval king of Denmark, see Harald Bluetooth. UHF radio waves in bluetooth patch port number ISM band from 2. It was originally conceived as a wireless alternative to RS-232 data cables.
30,000 member companies in the areas of telecommunication, computing, networking, and consumer electronics. The IEEE standardized Bluetooth as IEEE 802. The development of the “short-link” radio technology, later named Bluetooth, was initiated in 1989 by Nils Rydbeck, CTO at Ericsson Mobile in Lund, Sweden and by Johan Ullman. Nils Rydbeck tasked Tord Wingren with specifying and Jaap Haartsen and Sven Mattisson with developing.
Both were working for Ericsson in Lund. Invented by Dutch electrical engineer Jaap Haartsen, working for telecommunications company Ericsson in 1994. Harald Bluetooth who united dissonant Danish tribes into a single kingdom. The idea of this name was proposed in 1997 by Jim Kardach of Intel who developed a system that would allow mobile phones to communicate with computers.
At the time of this proposal he was reading Frans G. MHz wide at the bottom end and 3. Bluetooth uses a radio technology called frequency-hopping spread spectrum. Bluetooth divides transmitted data into packets, and transmits each packet on one of 79 designated Bluetooth channels.
MHz spacing, which accommodates 40 channels. Since the introduction of Bluetooth 2. 8-DPSK modulation may also be used between compatible devices. One master may communicate with up to seven slaves in a piconet. All devices share the master’s clock. Packet exchange is based on the basic clock, defined by the master, which ticks at 312.